Hello,I have an issue that I need to solve.When I do a relief job and export a toolpath it is machined as on the video attached.I selected raster, but it's rastered 'in parts' causing the artifacts shown on the photos at the end of the video.https://youtu.be/O7B-LraZ9rE

I need to have the surface uniform but it seems like the tool continued raised about 0,1mm above where it supposed to.I tried to put material blocks in different heights in case of the issue with Z axis, but it appears at the same place.Later I noticed it's because of how the toolpath is generated.Tool will not do a full sweep of the model from bottom to top, but goes back and forth.

Is there any way I can force aspire to make the toolpath go from one side to the other with raster without lifting the tool?

Or how can I troubleshoot whether it's the machine issue or aspire/toolpath/Mach3?

I don't think it's the machine as tool was lifted more than once as seen on the video, but artifact happened only at that place.

Try making a boundary vector around the carve that is “offset way larger” than normal. Then select that vector, recalc your finish Toolpath (assuming no Roughing since you’re using foam material). Run a preview and see if that “fixes” the issue. If not, make the boundary offset even larger and try again.

Usually, when I post a response, it's info that's already known... So why stop now? Haha... What I post below is also posted on one of the Facebook CNC pages.

Yep... Mine (Aspire) does that too... I never thought much about it beyond figuring the lines were caused by backlash in my machine. The way the particular model you reference looks like it's done, it would have to pick up and move because some areas are in "shadows", or the tool would have to backtrack over previously machined areas if it didn't pick up off the material. Many years ago, when I used another CAD-CAM package with a non-Mach 3 MC3V controller, there was an option to keep the tool at depth, and it would backtrack over previously machine areas to get to the shadowed areas instead of picking up to move. That helped, but didn't make up for movement in the material.

I believe this is the key issue. You can inspect the code to see that the Z heights are correct. You can reduce this by forcing the toolpath not to jump around, but that does mean a longer cutting time.

- Randall Newcomb10 fingers in, 10 fingers out - another good day in the shop